package com.sky.user.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.enumeration.OperationType;
import com.sky.exception.LoginFailedException;
import com.sky.properties.WeChatProperties;
import com.sky.user.entity.dto.UserLoginDTO;
import com.sky.user.entity.po.User;
import com.sky.user.mapper.UserMapper;
import com.sky.user.service.IUserService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
//import com.sky.utils.AutoFill;
import com.sky.utils.HttpClientUtil;
import lombok.RequiredArgsConstructor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

/**
 * <p>
 * 用户信息 服务实现类
 * </p>
 *
 * @author liujiawei
 * @since 2024-09-06
 */
@Service
@RequiredArgsConstructor
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements IUserService {


    private final UserMapper userMapper;
    private final WeChatProperties weChatProperties;

    //微信服务接口地址
    public static final String wxLogin = "https://api.weixin.qq.com/sns/jscode2session";


    /**
     * 微信用户登陆
     * @param userLoginDTO
     * @return
     */
    @Override
    public User wxLogin(UserLoginDTO userLoginDTO) {

        String openid = getOpenid(userLoginDTO.getCode());
        //判断openid是否为空，如果为空表示登陆失败，抛出业务异常
        if (openid == null){
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
        }

        //判断当前用户是否为新用户
        User user = userMapper.selectById(openid);

        //如果是新用户，自动完成注册
        if (user == null){
            user = User.builder()
                    .openid(openid)
                    .createTime(LocalDateTime.now())
                    .build();
            insert(user);
        }

        //返回这个用户对象
        return user;
    }

//    @AutoFill(OperationType.INSERT)
    private void insert(User user) {
        userMapper.insert(user);
    }

    /**
     * 调用微信接口服务，获得当前微信用户的openid
     * @param code
     * @return
     */
    private String getOpenid(String code){
        //调用微信接口服务，获得当前微信用户的openid
        Map<String, String> map = new HashMap<>();
        map.put("appid",weChatProperties.getAppid());
        map.put("secret",weChatProperties.getSecret());
        map.put("js_code",code);
        map.put("grant_type","authorization_code");
        String json = HttpClientUtil.doGet(wxLogin, map);

        JSONObject jsonObject = JSON.parseObject(json);
        String openid = jsonObject.getString("openid");
        return openid;
    }
}
